<html>
  <head>
    <!-- include Vue 2.x -->
    <script src="https://cdn.jsdelivr.net/npm/vue@^2"></script>
    <!-- include vue-treeselect & its styles. you can change the version tag to better suit your needs. -->
    <script src="https://cdn.jsdelivr.net/npm/@riophae/vue-treeselect@^0.4.0/dist/vue-treeselect.umd.min.js"></script>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@riophae/vue-treeselect@^0.4.0/dist/vue-treeselect.min.css">
  </head>
  <body>
    <div id="app">
      <treeselect
      v-model="value"
      :disable-branch-nodes="true"
      :options="options"
      placeholder="选择你需要的标签" />
    </div>
  </body>
  <script>
    // register the component
    Vue.component('treeselect', VueTreeselect.Treeselect)

    new Vue({
      el: '#app',
      data: {
        // define the default value
        value: null,
        // define options

        options: [ {
          id: 'a',
          label: 'a',
          children: [ {
            id: 'aa',
            label: 'aa',
          }, {
            id: 'ab',
            label: 'ab',
          } ],
        }, {
          id: 'b',
          label: 'b',
        }, {
          id: 'c',
          label: 'c',
        } ],
      },
    })
  </script>
</html>